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TRB’s National Cooperative Highway Research Program (NCHRP) Report 677: Development of Levels of Service for the Interstate Highway System examines a level-of-service-based approach to describing the performance of Interstate Highway System (IHS) assets. The report also includes a template and process that state departments of transportation (DOTs) may use to implement this approach for managing their IHS assets.

The appendices to NCHRP Report 677 were published on a CD-ROM that is included with the report. Titles of the appendices are as follows:

• Appendix A: State-of-the-Practice Research

• Appendix B: Development of Levels of Service for the IHS

The CD-ROM is also available for download from TRB’s website as an ISO image. Links to the ISO image and instructions for burning a CD-ROM from an ISO image are provided below.

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Suggested Citation

National Academies of Sciences, Engineering, and Medicine. 2010. Development of Levels of Service for the Interstate Highway System. Washington, DC: The National Academies Press.

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Publication Info

40 pages |  8.5 x 11 |  DOI:

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